In QUIC version >= 38, enables random padding of size [1, 256]

net/quic/core/quic_session.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // A QuicSession, which demuxes a single connection to individual streams.
 
 #ifndef NET_QUIC_CORE_QUIC_SESSION_H_
 #define NET_QUIC_CORE_QUIC_SESSION_H_
 
 #include <cstddef>
@@ skipping 104 matching lines @@
   // indicating if the fin bit was consumed.  This does not indicate the data
   // has been sent on the wire: it may have been turned into a packet and queued
   // if the socket was unexpectedly blocked.
   // If provided, |ack_notifier_delegate| will be registered to be notified when
   // we have seen ACKs for all packets resulting from this call.
   virtual QuicConsumedData WritevData(
       QuicStream* stream,
       QuicStreamId id,
       QuicIOVector iov,
       QuicStreamOffset offset,
-      bool fin,
+      StreamSendingState state,
       QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener);
 
   // Called by streams when they want to close the stream in both directions.
   virtual void SendRstStream(QuicStreamId id,
                              QuicRstStreamErrorCode error,
                              QuicStreamOffset bytes_written);
 
   // Called when the session wants to go away and not accept any new streams.
   void SendGoAway(QuicErrorCode error_code, const std::string& reason);
 
@@ skipping 305 matching lines @@
   // The stream id which was last popped in OnCanWrite, or 0, if not under the
   // call stack of OnCanWrite.
   QuicStreamId currently_writing_stream_id_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_SESSION_H_